79 year-old man was admitted for efforting angina. He did not have other coronary risk factors. Thallium spect study showed partial reversibility in RCA territory and echocardiography revealed also regional wall motion abnormality in inferior wall.

1. A right coronary angiogram showed TIMI 0 flow at mid portion of RCA with collateral from LAD ( movie 1, movie 2, movie 3) with some possibilities of micro channel in total occluded segment.
2. A left coronary angiogram showed diffuse, luminal irregularities without significant stenosis and septal collaterals to RCA.

Firstly, left coronary was cannulated with a 5 Fr JL4 diagnostic catheter and right coronary was inserted with JR 3.5 7 Fr SH guiding catheter. Initially, by using a Finecross® 0.014 inch 1.8 Fr micro catheters, 0.014 inch Fielder XT wire was tried. Unfortunately, the wire was advanced into false lumen. (Figure 1) We tried with another 0.014 inch Miracle 3.0g wire using Finecross micro catheter. (Figure 2, Figure 3) So, that was “Parallel Wire Technique”. Using variable projection with small contrast, we recanalized the occluded segment, successfully. (Figure 4) And then, after removal of microcatheter, balloon dilatation with Ryujin 1.5*20mm was performed.(Figure 5, Figure 6, Figure 7) A Miracle wire was changed to Floppy wire. Two consecutive Taxus liberte stent (3.0*38mm + 2.75*32mm) were deployed. (Figure 8, Figure 9) The final angiogram showed well positioned and expanded stent with good distal run-off flow.(Figure 10)